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24 terms

muscles of low back

tx of ortho muscle of low back AOIN
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Quadratus lumborum action
unilaterally: laterally tilt the pelvis, laterally flex the vertebral column to the same side, assist to extend the vertebral column. Bilaterally: fix the last rib during inhalation and forced exhalation
Quadratus lumborum origin
posterior illiac crest
Quadratus lumborum insertion
last rib and transverse processes of first through fourth lumbar vertebrae
Quadratus lumborum nerve
branches of first lumbar and twelfth thoracic
Gluteus maximus action
all fibers: extend the hip, laterally rotate the hip, abduct the hip. Lower fibers: adduct the hip
Gluteus maximus origin
coccyx, edge of sacrum, posterior illiac crest, sacrotuberous and sacroilliac ligaments
Gluteus maximus insertion
gluteal tuberosity and iliotibial tract
Gluteus maximus nerve
inferior gluteal
Gluteus medius action
all fibers: abduct the hip. Anterior fibers: flex the hip, medially rotate the hip. Posterior fibers: extend the hip, laterally rotate the hip.
Gluteus medius origin
gluteal surface of the ilium between the iliac crest and the posterior and anterior gluteal lines
Gluteus medius insertion
greater trochanter
Gluteus medius nerve
superior gluteal
Gluteus minimus action
abduct the hip, medially rotate the hip, flex the hip
Gluteus minimus origin
gluteal surface of the ilium between the anterior and inferior gluteal lines
Gluteus minimus insertion
anterior border of greater trochanter
Gluteus minimus nerve
superior gluteal
Piriformis action
laterally rotate the hip, abduct the hip when the hip is flexed
Piriformis origin
anterior surface of sacrum
Piriformis insertion
greater trochanter
Piriformis nerve
branch of sacral plexus
Psoas major action
flex the hip, laterally rotate the hip, adduct the hip
Psoas major origin
bodies and transverse processes of lumbar vertebrae
Psoas major insertion
lesser trochanter
Psoas major nerve
lumbar plexus